@media screen and (max-width: 320px) {
  html {
    font-size: 75px !important;
  }
}

@media screen and (min-width: 750px) {
  html {
    font-size: 75px !important;
  }
}

a {
  text-decoration: none;
}

img {
  vertical-align: middle;
}

body {
  box-sizing: border-box;
  min-width: 320px;
  max-width: 750px;
  margin: 0 auto;
  line-height: 1.5;
  width: 10rem;
  font-size: .3333rem !important;
  background-color: pink;
  border: 1px solid black;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 10rem;
  height: 1.2rem;
  /* background-color: #ffc001; */
  overflow: hidden;
}

.classify {
  margin-left: .2667rem;
  width: .5333rem;
  height: .9333rem;
}

.classify img {
  width: .5333rem;
  height: .9333rem;
}

.search {
  flex: 1;
  height: .88rem;
  margin: 0 .2667rem;
  padding: 0 .2667rem;
  color: #898682;
  border: 0;
  border-radius: .4667rem;
  background-color: #fff2cc;
  outline: none;
}

.login {
  width: .8rem;
  height: .8rem;
  line-height: 0.8rem;
  color: white;
}

.banner {
  width: 10rem;
}

.banner img {
  width: 100%;
}

.add {
  display: flex;
  width: 10rem;
}

.add a {
  flex: 1;
}

.add a img {
  width: 100%;
}

.nav {
  width: 10rem;
}

.nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-evenly;
  float: left;
  width: 2rem;
  height: 2.1333rem;
  color: #222;
}

.nav a img {
  width: 1.1333rem;
  height: 1.1333rem;
}